If a teacher is cracking filthy jokes in a class and you are enable to stop him, then what will you do? [2632]

Q) If a teacher is cracking filthy jokes in a class and you are enable to stop him, then what will you do?

Options:
A)persuade him/her decently not to waste their time-in filthy jokes.
B) live in isolation or change the group.
C) instruct him to mind his/her language in class.
D) be critical and remind him for the nobility of their jobs.